<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8"/>
    <title>登录</title>
</head>
<body>
    <p>错误信息：<h4 th:text="${msg}"></h4></p>
    <form action="" method="post">
        <p>账号：<input type="text" name="username"/></p>
        <p>密码：<input type="password" name="password"/></p>
        <p><input type="submit" value="登录"/></p>
    </form>
</body>
</html>